org.hibernate.bytecode.instrumentation.spi.LazyPropertyInitializer Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008-2011, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.bytecode.instrumentation.spi;
import java.io.Serializable;
import org.hibernate.engine.spi.SessionImplementor;
/**
* Contract for controlling how lazy properties get initialized.
*
* @author Gavin King
*/
public interface LazyPropertyInitializer {
/**
* Marker value for uninitialized properties
*/
public static final Serializable UNFETCHED_PROPERTY = new Serializable() {
public String toString() {
return "";
}
public Object readResolve() {
return UNFETCHED_PROPERTY;
}
};
/**
* Initialize the property, and return its new value
*
* @param fieldName The name of the field being initialized
* @param entity The entity on which the initialization is occurring
* @param session The session from which the initialization originated.
*
* @return ?
*/
public Object initializeLazyProperty(String fieldName, Object entity, SessionImplementor session);
}